Aru Solar-system

System Specs:

  • Stellar Mass:  1.06 Sol-masses
  • Stellar Class:  G
  • Luminosity:  _ Sol
  • Planets:  5
  • Moons:  0
  • Asteroid Belts:  1
  • Asteroids:  0
  • Objects:  0

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Planets Directory:

  1. Jak Ser
  2. Irune
  3. Locil
  4. Cherk Sab
  5. Doldit

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Jak Ser:

  • Orbital Distance:  0.6 AU
  • Orbital Period:  0.4 Earth-years
  • Keplerian Ratio:  1.35
  • Radius:  10,792 km
  • Day Length:  35.3 Earth-hours
  • Atmospheric Pressure:  18.46 atm
  • Surface Temp:  416 °C
  • Surface Gravity:  1.04 g
  • Mass:  2.955 Earth-masses

Jak Ser features heavily in ancient volus mythology and folklore, since its bright white surface made it easy to chart in the night sky without the aid of a telescope. Once the volus developed advanced astronomical equipment, their scientists discovered that Jak Ser’s luminosity was caused by a thick carbon monoxide cloud cover that had hidden the real face of the planet for millennia.

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Irune:

  • Orbital Distance:  1.3 AU
  • Orbital Period:  1.5 Earth-years
  • Keplerian Ratio:  0.976
  • Radius:  11,525 km
  • Day Length:  36.2 Earth-hours
  • Atmospheric Pressure:  60.56 atm
  • Surface Temp:  9 °C
  • Surface Gravity:  1.5 g
  • Mass:  4.861 Earth-masses
  • Species:  Volus (Irune is their homeworld.)
  • Capital:  Lenos; population:  8,800,000,000

The volus homeworld is a high-pressure, high-gravity planet that supports an ammonia-based ecology. This rare environment means that the volus have been slow to colonize, as there are few planets that meet their habitation requirements. Most prefer to stay on Irune, working remotely via the extranet. The more adventurous don the clumsy but vital pressure suits and venture out to worlds in Citadel space to make their fortunes.

Irune is remarkable for having done away with warfare as an institution of the state. Volus culture lacks the romantic view of war found in the galaxy’s more aggressive species. Physical skirmishes between groups rarely last long, and are almost always ended by social castigation, bargaining agreements, or harsh economic sanctions.

Irune’s cities tend to be built on fast trade routes rather than militarily defensible positions. This has left them vulnerable to husk attack now that the Reapers have overwhelmed the turian fleets and begun a ground war on the planet.

CITADEL TRAVEL ADVISORY: Irune’s ammonia-based atmosphere is toxic to non-volus life-forms. Visitors to Irune must wear pressure suits at all times when traveling outside of environmentally controlled areas.

Additional Information 

Irune’s flora include the kympna lobes, a pungent silver carnivorous plant with teeth. Apparently, these can survive and thrive in non-volus environments: they can be integrated into floral arrangements with plants that do not have high-pressure requirements and ammonia biochemistries.

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Locil:

  • Orbital Distance:  5.8 AU
  • Orbital Period:  14.0 Earth-years
  • Keplerian Ratio:  0.995
  • Radius:  52,635 km
  • Day Length:  10.6 Earth-hours
  • Atmospheric Pressure:  _ atm
  • Surface Temp:  _ °C
  • Surface Gravity:  _ g
  • Mass:  _ Earth-masses
  • Satellites:  >96

The first of the Aru system’s three gas giants, Locil is also the largest. Boasting over 96 moons, this planet’s orbit bustled with hundreds of helium-3 extraction centers. Most of the work population lived on Locil’s orbital stations, which were so numerous they became an unofficial city chained together by taxi services and extendable umbilical cords. The Reaper attack here has devastated the infrastructure, raining fragments down onto the gas giant.

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Cherk Sab:

  • Orbital Distance:  10.4 AU
  • Orbital Period:  33.6 Earth-years
  • Keplerian Ratio:  0.996
  • Radius:  39.139 km
  • Day Length:  12.1 Earth-hours
  • Atmospheric Pressure:  _ atm
  • Surface Temp:  _ °C
  • Surface Gravity:  _ g
  • Mass:  _ Earth-masses

Named after a northern Irunian luck deity, Cherk Sab is overshadowed by the economy on Locil and the scientific research on Doldit. The solar system’s “middle child,” Cherk Sab now has the only functioning helium-3 fuel apparatus in the system, as the Reapers have not yet struck there. The space around it is jammed with volus ships trying to flee the system.

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Doldit:

  • Orbital Distance:  20.8 AU
  • Orbital Period:  95.2 Earth-years
  • Keplerian Ratio:  0.993
  • Radius:  28,982 km
  • Day Length:  10.6 Earth-hours
  • Atmospheric Pressure:  _ atm
  • Surface Temp:  _ °C
  • Surface Gravity:  _ g
  • Mass:  _ Earth-masses
  • Satellites:  >1

Doldit‘s moons have long been mined out, but they still hosted dozens of corporate-owned laboratories relocated there to avoid the environmental restrictions placed on research and development firms by Irune. Everything from weapon testing to cutting-edge biological research was outsourced to facilities orbiting Doldit. This made it an attractive target for the Reapers, who sent a small but powerful force to blow the facilities into scrap.

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